C0711

DTC C0711





Test 1-8





Test 9-16

Circuit Description
The Suspension Control module supplies 5 volts to the air pressure sensor. The pressure sensor uses this reference voltage to produce an analog output of approximately 0.15 - 4.85 volts. The signal voltage is a reference of the air pressure in the rear leveling system.

Conditions for Running the DTC
Continuously after ignition on.

Conditions for Setting the DTC
The Suspension Control module detects a signal voltage of below 0.15 volts or above 4.85 volts.

Action Taken When the DTC Sets
^ The system assumes a default pressure.
^ Disables compressor activity.
^ Stores a DTC C0711 in the Suspension Control module memory.

Conditions for Clearing the DTC
^ The Suspension Control module no longer detects the malfunction that caused the DTC to set.
^ Using the scan tool.
^ A history DTC will clear after 100 consecutive ignition cycles if the condition for the malfunction is no longer present.

Diagnostic Aids
If DTC C0870 is present, perform the diagnosis for that DTC first.
The following conditions may cause a malfunction to occur:
^ An open in the 5 volt reference circuit of the air pressure sensor.
^ A short to ground in the 5 volt reference circuit of the air pressure sensor.
^ An open in the signal circuit of the air pressure sensor.
^ A short to ground in the signal circuit of the air pressure sensor.
^ An open in the low reference circuit of the air pressure sensor.
^ A malfunction in the air pressure sensor.
^ A leak in the air tube at the air pressure sensor may cause a faulty sensor voltage reading.

Test Description
The numbers below refer to the step numbers on the diagnostic table.
2. Check sensor data parameter.
3. Tests for the proper operation of the circuit in the low voltage range.
4. Tests for the proper operation of the circuit in the high voltage range. If the fuse in the jumper opens when you perform this test, the signal circuit is shorted to ground.
5. Tests for a short to voltage in the 5 volt reference circuit.
6. Tests for a high resistance or an open in the ground circuit.
11. Check for open or high resistance in the sensor ground circuit.
15. The replacement Suspension Control module must be calibrated.